US9839587B2 - Treated platy substrates - Google Patents

Treated platy substrates Download PDF

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US9839587B2
US9839587B2 US13/794,897 US201313794897A US9839587B2 US 9839587 B2 US9839587 B2 US 9839587B2 US 201313794897 A US201313794897 A US 201313794897A US 9839587 B2 US9839587 B2 US 9839587B2
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platy substrate
treated
ppm
composition
platy
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US20130259914A1 (en
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Thomas Chirayil
David A. Yale
Betty Aucar
Matthew Delfico
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Basf Colors & Effects Usa LLC
Sun Chemical Corp
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BASF Corp
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
    • A61K8/0216—Solid or semisolid forms
    • A61K8/0233—Distinct layers, e.g. core/shell sticks
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
    • A61K8/0241—Containing particulates characterized by their shape and/or structure
    • A61K8/0254—Platelets; Flakes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
    • A61K8/0241—Containing particulates characterized by their shape and/or structure
    • A61K8/0254—Platelets; Flakes
    • A61K8/0258—Layered structure
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
    • A61K8/26—Aluminium; Compounds thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/40—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing nitrogen
    • A61K8/44—Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P17/00—Drugs for dermatological disorders
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q1/00—Make-up preparations; Body powders; Preparations for removing make-up
    • A61Q1/02—Preparations containing skin colorants, e.g. pigments
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q1/00—Make-up preparations; Body powders; Preparations for removing make-up
    • A61Q1/02—Preparations containing skin colorants, e.g. pigments
    • A61Q1/04—Preparations containing skin colorants, e.g. pigments for lips
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q1/00—Make-up preparations; Body powders; Preparations for removing make-up
    • A61Q1/02—Preparations containing skin colorants, e.g. pigments
    • A61Q1/04—Preparations containing skin colorants, e.g. pigments for lips
    • A61Q1/06—Lipsticks
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q1/00—Make-up preparations; Body powders; Preparations for removing make-up
    • A61Q1/02—Preparations containing skin colorants, e.g. pigments
    • A61Q1/10—Preparations containing skin colorants, e.g. pigments for eyes, e.g. eyeliner, mascara
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q1/00—Make-up preparations; Body powders; Preparations for removing make-up
    • A61Q1/12—Face or body powders for grooming, adorning or absorbing
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q11/00—Preparations for care of the teeth, of the oral cavity or of dentures; Dentifrices, e.g. toothpastes; Mouth rinses
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q15/00—Anti-perspirants or body deodorants
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q17/00—Barrier preparations; Preparations brought into direct contact with the skin for affording protection against external influences, e.g. sunlight, X-rays or other harmful rays, corrosive materials, bacteria or insect stings
    • A61Q17/04—Topical preparations for affording protection against sunlight or other radiation; Topical sun tanning preparations
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q3/00—Manicure or pedicure preparations
    • A61Q3/02—Nail coatings
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q5/00—Preparations for care of the hair
    • A61Q5/02—Preparations for cleaning the hair
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q5/00—Preparations for care of the hair
    • A61Q5/06—Preparations for styling the hair, e.g. by temporary shaping or colouring
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/40—Compounds of aluminium
    • C09C1/405—Compounds of aluminium containing combined silica, e.g. mica
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
    • A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
    • A61K2800/41—Particular ingredients further characterized by their size
    • A61K2800/412—Microsized, i.e. having sizes between 0.1 and 100 microns
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
    • A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
    • A61K2800/60—Particulates further characterized by their structure or composition
    • A61K2800/61—Surface treated
    • A61K2800/612—By organic compounds
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
    • A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
    • A61K2800/60—Particulates further characterized by their structure or composition
    • A61K2800/61—Surface treated
    • A61K2800/62—Coated
    • A61K2800/622—Coated by organic compounds
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
    • A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
    • A61K2800/60—Particulates further characterized by their structure or composition
    • A61K2800/65—Characterized by the composition of the particulate/core
    • A61K2800/651—The particulate/core comprising inorganic material
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/01—Particle morphology depicted by an image
    • C01P2004/03—Particle morphology depicted by an image obtained by SEM
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/60—Optical properties, e.g. expressed in CIELAB-values

Definitions

  • Platy pigments are composed of a plurality of laminar platelets coated with one or more reflecting/transmitting layers.
  • effect pigments are a laminar platy substrate such as natural mica or glass flake that has been coated with a metal oxide layer.
  • a description of effect pigments' properties can be found in the Pigment Handbook, Volume I, Second Edition, pp. 829-858, John Wiley & Sons, NY 1988, which is incorporated herein by reference. If colorless metal oxides are used to coat the laminar platy substrate, effect pigments exhibit pearl-like luster as a result of reflection and refraction of light, and depending on the thickness of the metal oxide layer, they can also exhibit interference color effects. If colored metal oxides are used, the observed effects depend on reflection, refraction and absorption.
  • Platy pigments such as effect pigments (also known as pearlescent pigments or nacreous pigments), are used to impart a pearlescent luster, metallic luster and/or multi-color effect approaching iridescence, to a material. It is, for instance, common to include platy pigments in cosmetic and personal care compositions, to contribute to or provide color, luster and/or pleasing tactile properties.
  • Natural mica and metal oxide-coated natural mica have a surface hydrophilicity character that may not be suitable for interaction with skin. In addition, the hydrophilicity can affect the distribution or dispersion of the pigment in a cosmetic composition.
  • a treated platy substrate comprising a platy substrate coated with N ⁇ -lauroyl-L-lysine, wherein the platy substrate is one or more of synthetic mica; metal oxide-coated synthetic mica; platy aluminum oxide flakes; metal oxide-coated platy aluminum oxide flakes; silicon dioxide flakes; metal oxide-coated silicon dioxide flakes; glass flakes; metal oxide-coated glass flakes; perlite flakes; and metal oxide-coated perlite flakes.
  • the N ⁇ -lauroyl-L-lysine coating can be present on the surface of the platy substrate in the range of about 0.5% to about 15% weight of the platy substrate.
  • the N ⁇ -lauroyl-L-lysine coating can be present on the surface of the platy substrate in the range of about 4% to about 6% weight of the platy substrate, or about 4.5% weight of the platy substrate.
  • the treated platy substrate can comprise less than or equal to 1 ppm lead.
  • the treated platy substrate can have a hydrophobic contact angle of greater than 90° or at least about 130°.
  • the treated platy substrate can have one or more of: improved hardness, improved compressibility, and improved masking properties.
  • the cosmetic composition comprising the treated platy substrate.
  • the cosmetic composition can further comprise a particulate component having a gritty feeling and wherein the treated platy substrate is present in an amount sufficient to mask the gritty feeling.
  • a method of preparing the treated platy substrate comprises contacting a platy substrate in an aqueous dispersion with a N ⁇ -lauroyl-L-lysine solution to form a reaction mixture, wherein the pH of the reaction is maintained at about 5 to 7.
  • the contacting step is under reaction conditions that result in precipitation of the N ⁇ -lauroyl-L-lysine onto the surface of a platy substrate in the reaction mixture.
  • N ⁇ -lauroyl-L-lysine can be precipitated at about 0.5% to 15.0% by weight of the platy substrate.
  • the rate of addition of N ⁇ -lauroyl-L-lysine can be about 0.15-1.0 milligrams N ⁇ -lauroyl-L-lysine per gram platy substrate per minute.
  • the platy substrate is one or more of synthetic mica; metal oxide-coated synthetic mica; platy aluminum oxide flakes; metal oxide-coated platy aluminum oxide flakes; silicon dioxide flakes; metal oxide-coated silicon dioxide flakes; glass flakes; metal oxide-coated glass flakes; perlite flakes; and metal oxide-coated perlite flakes.
  • BASF CHIONETM M SVA is a novel performance mineral composed of Synthetic Fluorophlogopite, commonly known as synthetic mica, coated with lauroyl lysine.
  • the resulting powder is very white and have a velvety texture, which can enhance the feel of both anhydrous and hydroalchoholic formulations.
  • This highly lubricious additive is suitable for all cosmetic applications, including eye and lip area use. Its very white appearance is also suited for skin car formulations, where the neutral color will not impact the base color of the formulated cosmetic.
  • Exemplary formulations demonstrating the use of CHIONETM M SVA are provided herein. These examples are not meant to be limiting in any way, and one skilled in the art will readily find many other applications and combinations of cosmetic ingredients, colorants, and the above disclosed performance mineral.
  • FIG. 1 is a scanning electron microscopy image of synthetic mica. Magnification is 5000 ⁇ .
  • FIG. 2 is a scanning electron microscopy image of synthetic mica coated with 5% lauroyl lysine. Magnification is 5000 ⁇ . Dotted arrows indicate areas of coated lauroyl lysine on the synthetic mica. Solid arrow indicates precipitated lauroyl lysine particles.
  • FIG. 3 is a scanning electron microscopy image of synthetic mica blended with 5% lauroyl lysine. Magnification is 10,000 ⁇ . Solid arrow indicates lauroyl lysine particles resting on surface of synthetic mica
  • FIG. 4 is a graph depicting whiteness data for a representative treated platy substrate of the disclosure and for untreated Natural V mica.
  • the treated platy substrate disclosed has surface modification resulting in a hydrophobic surface.
  • the treated platy substrate can exhibit good oil absorption, which can benefit cosmetic formulations, such a lipsticks.
  • Cosmetic compositions comprising the treated platy substrate exhibit very smooth, creamy skin feeling, and provides good skin adhesion.
  • the treated platy substrate disclosed herein has improved transparency in cosmetic compositions compared to compositions comprising talc or lauroyl lysine treated natural mica.
  • the treated platy substrate can hide or mask the gritty feeling of particulate components, for instance, 5 micron REFLECKS, in a cosmetic composition.
  • the treated platy substrate can possess an improved compressibility profile, including compressibility at lower pressures, and improved hardness and uniformity in pressed compositions. Further provided are a method of preparing the treated platy substrate, and compositions comprising the treated platy substrate.
  • the treated platy substrate comprises a platy substrate that comprises a coating of compound I:
  • the platy substrate is coated with compound I wherein n is 3. In an aspect, the platy substrate is coated with compound I wherein n is 3 and m is 18. In an embodiment, the compound is N ⁇ -lauroyl-L-lysine. The coating acts to modify the surface of the platy substrate such that the treated platy substrate has improved properties.
  • N ⁇ -lauroyl-L-lysine Methods of preparing compound I, including N ⁇ -lauroyl-L-lysine, are known in the art. See, for instance, U.S. Pat. Nos. 4,640,943 and 5,326,392.
  • N ⁇ -lauroyl-L-lysine is commercially available, for instance, Amihope® LL from Ajinomoto NA (Fort Lee, N.J.).
  • a “platy substrate” refers to a lamellar material having a high aspect ratio (ratio of average particle size to particle thickness).
  • Examples of platy materials useful as substrates include synthetic mica; platy aluminum oxide flakes; silicon dioxide flakes; glass flakes; and perlite flakes.
  • synthetic mica refers to synthetic fluorphlogopite.
  • Metal oxide-coated platy materials such as titanium dioxide (TiO 2 )-coated synthetic mica, can also be used.
  • Other metal oxides for coating the platy substrate include Fe 2 O 3 , Fe 3 O 4 , SiO 2 , bismuth oxychloride, and combinations thereof.
  • Excluded platy materials are: talc; natural mica including, but not limited to, natural muscovite, natural sericite, and natural phlogopite; iron oxide coated natural mica; titanium dioxide natural mica; and chromium oxide coated natural mice.
  • the substrate is synthetic mica.
  • Synthetic mica comprising a low lead (Pb) level of less than 3 ppm Pb, less than or equal to 1 ppm Pb or less than or equal to 0.5 ppm Pb can be used.
  • the low Pb synthetic mica can be uncoated, or it can coated with a metal oxide, such as titanium dioxide, or multi-layers of metal oxide, such as alternating layers of titanium dioxide and silicon dioxide or an iron oxide.
  • Platy materials comprising metal oxide layers can be formed by any process known in the art. It can be accomplished, as one example, by precipitating a metal ion with hydroxide onto laminar platy substrate, such as synthetic mica, and thereafter, calcining the coated particulates to provide metal oxide-coated flake-form pigment. Other coating procedures, such as for example, chemical vapor deposition processes, can also be used to prepare metal oxide-coated platy substrates useful in the claimed composition.
  • the substrate comprises or consists of TiO 2 -coated synthetic mica.
  • Metal oxide-coated platy substrates further comprising an organic colorant can be used. Colorants include, but are not limited to, absorption colorants, D&C colors, and FD&C colors.
  • the colorant is deposited with compound I, such as N ⁇ -lauroyl-L-lysine, on the metal oxide-coated platy substrate.
  • the average particle size of the platy substrates can vary from an average of about 3 micrometers to an average of about 100 micrometers ( ⁇ m), although smaller flakes of down to about 1 ⁇ m) and less or larger flakes of up to 150 ⁇ m or more can also be used if desired.
  • the platy substrate can have a thickness of about 0.1 to 10 ⁇ m and an aspect ratio (average particle size/thickness) of at least about 10 and up to about 200.
  • Effect pigments comprising synthetic mica as substrates are commercially available and can be treated according the method disclosed to prepare treated platy substrates.
  • Synthetic mica based pigments include those available from BASF Corporation (Florham Park, N.J.) under the trade name CHIONETM.
  • Other commercially available synthetic mica based pigments include Fiesta Color Effect Pigments (Impact Colors, Inc., Newark, Del.) and TIMIRON® Ice Crystal and TIMIRON® Synwhite 40 from EMD Chemicals Inc (Gibbstown, N.J.).
  • Platy material that is not commercially available can also be treated in accordance with the disclosed method.
  • the treated platy substrate comprises about 90% to 96% weight synthetic mica with an about 4% to 10% wt. N ⁇ -lauroyl-L-lysine coating, or about 94% to 96% weight synthetic mica with an about 4% to 6% wt. N ⁇ -lauroyl-L-lysine coating, or about 95.5% weight synthetic mica with about 4.5% wt. N ⁇ -lauroyl-L-lysine coating.
  • the particle size of the treated platy substrate in this embodiment can be in the range of 5-25 micrometers ( ⁇ m) with an about 10 ⁇ m average.
  • the whiteness of the treated platy substrate can be equal to or greater than 50, 60 or 70 on the whiteness index (per ASTM E313).
  • the compound is coated onto the surface of the platy substrate by precipitation.
  • the procedure for precipitating compound I and in particular, N ⁇ -lauroyl-L-lysine, is carried by adding, with stirring, either an acidic or alkaline solution of the compound to an aqueous dispersion of platy substrate.
  • the alkaline solution can be 3.5% sodium hydroxide.
  • Alkali or acid is then added to bring the pH into the range of about 5-7 or of about 5.8 to 6.2.
  • the precipitation reaction can be carried out at ambient temperature.
  • the compound precipitates out of solution under the conditions of the reaction medium, and on to the platy substrate surfaces, thereby forming a coating on the platy substrate surface.
  • the coated platy substrate is washed several times and dried by any method known in the art.
  • the resulting coated platy substrate can be sieved, such as through a #200 mesh screen.
  • Variables in the method of preparing the treated platy substrate include pH, temperature, concentrations, and addition rates. These variables can be adjusted by the skilled artisan within the disclosed ranges as necessary for a combination of compound and platy substrate.
  • the compound such as N ⁇ -lauroyl-L-lysine
  • the rate of compound addition to the platy substrate dispersion can be about 0.10-1.50 mg. compound per g. substrate per minute. The skilled artisan can readily select an addition rate that is convenient and effective.
  • An addition rate can be about 0.15-1.0 mg. compound per g. substrate per minute.
  • An addition rate can be about 0.15-1.0 mg. N ⁇ -lauroyl-L-lysine per g. synthetic mica per minute.
  • the pH of the solution during lauroyl lysine addition can be varied or held constant over the range of 5-7.
  • a pH range of about 5.6 to 6.2 can be used for both constant pH procedures and for procedures of variable pH.
  • the precipitation reaction can be carried out at any temperature from about 15° C. to 80° C. It can be convenient to use an ambient temperature, e.g., 15° C. to 30° C. or 20° C. to 30° C.
  • the precipitation of the compound is carried out with a calcium salt, such as calcium chloride, in the stirred aqueous platy substrate dispersion.
  • the aqueous platy substrate dispersion comprises calcium chloride in the range of about 0.25-1.0 mole, or about 0.5 mole, for each mole of N ⁇ -lauroyl-L-lysine added.
  • the effect of the calcium chloride is a salting-out effect. That is, the salting out may speed up or facilitate the precipitation, and it beneficially affects the character of the precipitate and the treated platy substrate.
  • a salt with the compound is essentially not formed.
  • the platy substrate is generally dispersed in an aqueous medium at about 4% to 20% wt./wt., before the start of the treatment reaction. Considerations for selecting the wt. % include formation of a good dispersion and the ability to achieve adequate stirring during precipitation.
  • synthetic mica is the platy substrate, a dispersion comprising about 5 wt./wt to about 15% wt./wt or 8% wt./wt to about 12% wt./wt synthetic mica can be used.
  • the treated platy substrate disclosed can be used in any application benefiting from the properties the treated platy substrates possess. These properties include for example: improved hydrophobic surface such as a contact angle greater than 90°, greater than 105°, or greater than 130°, or between about 135° to 140°; improved compressibility, e.g., more uniform compression compared to non-treated substrate and compression at lower pressures; smooth skin feeling; high oil absorption; improved transparency that reduces dirty mass tones of prior art platy substrates, such as talc or lauroyl lysine coated natural mica in cosmetic compositions; able to hide or mask the gritty feeling of other pigments, such as 5 micron REFLECKS platy pigment, in compositions better than, for instance, treated natural mica.
  • improved hydrophobic surface such as a contact angle greater than 90°, greater than 105°, or greater than 130°, or between about 135° to 140°
  • improved compressibility e.g., more uniform compression compared to non-treated substrate and compression at lower pressures
  • Treated synthetic mica can also exhibit increased hardness in a pressed sample, relative to treated natural mica in a sample pressed under the same conditions as the treated synthetic mica and as measured on a pressed sample using a durometer.
  • the increased hardness of treated synthetic mica is least about 1%, at least about 3% or at least about 5%, relative to treated natural mica.
  • Treated synthetic mica can have a hardness of equal to greater than about 60, about 61, about 62 or about 63, on a hardness scale of 0 to 100, as measured using a durometer.
  • Applications that can benefit from one or more of these properties include, but are not limited to, cosmetics, paints, ink jet printing, for dyeing textiles, for pigmenting coatings (paints), printing inks, plastics, glazes for ceramics and glass, and the like.
  • the treated platy substrate can be part of a cosmetic composition.
  • the cosmetic composition can comprise non-treated platy substrates or natural mica platy substrates, or the cosmetic composition can exclude non-treated platy substrates and/or natural mica platy substrates.
  • the form of the cosmetic composition can be any form normally used for cosmetics such as cream, emulsion, foam, gel, lotion, milk, mousse, ointment, paste, powder, spray, or suspension.
  • the cosmetic composition can be any colored cosmetic used on the skin, hair, eyes, or lips, such as concealing sticks, foundation, stage make-up, mascara (cake or cream), eye shadow (liquid, pomade, powder, stick, pressed or cream), hair color, lipsticks, lip gloss, kohl pencils, eye liners, blushers, eyebrow pencils, and cream powders.
  • compositions include, but are not limited to, nail enamel, skin glosser stick, hair sprays, face powder, leg-makeup, insect repellent lotion, nail enamel remover, perfume lotion, and shampoos of all types (gel or liquid).
  • the claimed compositions can be used in shaving cream (concentrate for aerosol, brushless, lathering), hair groom, cologne stick, cologne, cologne emollient, bubble bath, body lotion (moisturizing, cleansing, analgesic, astringent), after shave lotion, after bath milk and sunscreen lotion.
  • the amount of the treated platy substrate present in a cosmetic composition is dependent on the cosmetic being created and the final form of the cosmetic.
  • One skilled in the art will be able to determine the appropriate amount of pigment to use based upon the desired properties of the cosmetic formulation; however, a cosmetic composition can comprise from about 0.005 to 99.9%, about 0.05 to about 50%, or about 0.1 to about 10% by weight of the claimed treated platy substrate, based on the total weight of the cosmetic composition.
  • the cosmetic composition optionally comprises at least one cosmetically acceptable auxiliary agent.
  • Cosmetically acceptable auxiliary agents include, but are not limited to, carriers, excipients, emulsifiers, surfactants, preservatives, fragrances, perfume oils, thickeners, polymers, gel formers, dyes, absorption pigments, photoprotective agents, consistency regulators, antioxidants, antifoams, antistats, resins, solvents, solubility promoters, neutralizing agents, stabilizers, sterilizing agents, propellants, drying agents, opacifiers, cosmetically active ingredients, hair polymers, hair and skin conditioners, graft polymers, water-soluble or dispersible silicone-containing polymers, bleaches, care agents, colorants, tinting agents, tanning agents, humectants, refatting agents, collagen, protein hydrolyzates, lipids, emollients and softeners, tinting agents, tanning agents, bleaches, keratin-hardening substances, antimicrobial active ingredients
  • ChioneTM M SVA refers to the M-fraction of ChioneTM synthetic mica treated with lauroyl lysine in accordance with the disclosure.
  • Cremophor ® A 25 (Ceteareth-25) 1 2.50 Cremophor ® GS 32 (Polyglyceryl-3 Distearate) 1 2.50 Cremophor ® WO-7(PEG-7 Hydrogenated Castor Oil) 1 0.50 Stearyl Alcohol (LANETTE 18) 2 2.50 Dimethicone (DOW CORNING 200 FLUID 50 CST) 3 1.50 Luvitol ® Lite (Hydrogenated Polyisobutene) 1 1.50 Vitamin E Acetate Care (Tocopherol Acetate) 1 0.50 Bisabolol Racemic (Bisabolol) 1 1.00 D. DI Water 10.00 Tinosorb ® M* (Bisoctrizole) 1 10.00 E.
  • the sun protection composition can be prepared according to the following steps.
  • the face powder composition can be prepared according to the following steps.
  • Luvitol ® Lite Hydrogenated Polyisobutene 6 10.00
  • the concealer stick composition can be prepared according to the following steps.
  • the cream foundation composition can be prepared according to the following steps.
  • the deodorant composition can be prepared according to the following steps.
  • the eyeliner composition can be prepared according to the following steps.
  • the hair gloss composition can be prepared according to the following steps.
  • An exemplary icy gel toothpaste composition is shown in Table 8.
  • the icy gel toothpaste composition can be prepared according to the following steps.
  • Pentaerythrityl Tetraisostearate (CRODAMOL PTIS) 1 (q.s to 100%) 20.05 Ricinus Communis (Castor) Seed Oil 11.60 Di-PPG-3 Myristyl Ether Adipate (CROMOLLIENT DP3A) 1 11.50 Crambe Abyssinica Seed Oil (FANCOR ABYSSINIAN OIL) 2 10.50 C10-30 Cholesterol/Lanosterol Esters (SUPER STEROL ESTER) 1 6.25 Meadowfoam Estolide (MEADOWESTOLIDE) 2 6.00 Meadowfoam Estolide (and) Meadowfoam Delta-Lactone (and) 5.00 Crambe Abyssinica Seed Oil (and) Carthamus Tinctorius (Safflower) Seed Oil (and) Olive Oil Unsaponifiable (and) Beta-Sitosterol (ANTI- AGING SKIN COMPLEX) 2 Euphorbia
  • the lip balm composition can be prepared according to the following steps.
  • the crème lipstick composition can be prepared according to the following steps.
  • the eye mascara composition can be prepared according to the following steps.
  • the nail enamel composition can be prepared according to the following steps.
  • the pressed powder eyeshadow composition can be prepared according to the following steps.
  • the shampoo composition can be prepared according to the following steps.
  • the spray highlighter composition can be prepared according to the following steps.
  • the spray highlighter composition can be packaged as follows.
  • compositions and methods of use should in no way be construed as being limited to the following examples, but rather, should be construed to encompass any and all variations which become evident as a result of the teaching provided herein.
  • the M-fraction of CHIONETM synthetic mica was used in this example.
  • the synthetic mica was coated in three different concentrations of N ⁇ -lauroyl-L-lysine solution: 4.5%, 7.5% and 10%.
  • the N ⁇ -lauroyl-L-lysine (hereinafter “lauroyl lysine”) used in this example is commercially available as Amihope® LL (Ajinomoto NA, Fort Lee, N.J.). Amihope® LL is described by the manufacturer as a functional powder that is not soluble in water or oil, and is soluble in alkaline solutions.
  • the three lauroyl lysine solutions for this example were prepared in a 3.5% NaOH solution. Solutions were stirred for 15 minutes at 350 rpm.
  • a 32% calcium chloride (CaCl 2 ) solution was prepared in deionized water.
  • the details for coating the synthetic mica with 10.0% lauroyl lysine are as follows, and were carried out at ambient conditions. In a 5 liter flask, 150 grams M-fraction synthetic mica and 1350 grams deionized water were combined. Mixing speed was set to 600 rpm, then 24.6 grams of 32% CaCl 2 was added. The solution was then stirred for 30 minutes, after which the lauroyl lysine solution was added using a peristaltic pump and a pH relay controller. 1365 grams 10% lauroyl lysine was added, while maintaining pH between 5.8-6.2 using 10% HCl. Rates for both the lauroyl lysine addition and the 10% HCl addition were about 5 grams/minute. After the addition of the lauroyl lysine, the pH was adjusted to pH 7.
  • the coated platy substrate was filtered and washed with a total of 3000 ml deionized water (6 ⁇ 500 ml).
  • the washed coated platy substrate was dried at 120° C. to a constant weight, which took about 3 hours. After drying, the coated platy substrate was sieved using a #200 mesh screen.
  • the substantially same procedure was used to coat the synthetic mica with 4.5% and 7.5% lauroyl lysine.
  • the pH was adjusted to pH 7, and then the coated platy substrate was filtered and washed.
  • the 4.5% coated substrate was dried at 110° C. to a constant weight, which took about 2 hours.
  • the contact angle of the three resulting coated platy substrates was measured. In general, the greater that contact angle, the greater the hydrophobicity of the surface. A contact angle of greater than 90° is designated a hydrophobic surface.
  • the contact angle data is summarized in Table 17.
  • the uncoated synthetic mica had a contact angle of less than 90°, indicative of its hydrophilic surface. All three coated synthetic mica samples had a contact angle greater than 90° and therefore are hydrophobic.
  • compositions were prepared with the treated synthetic mica. As comparative samples, the compositions were also prepared using the following platy substrates: untreated CHIONE synthetic mica M-fraction; untreated natural mica (Natural V mica); and lauroyl lysine-treated natural mica (MEARLMICA® Treated SVA, BASF; comprises 2.5-4.5% lauroyl lysine).
  • a lipstick composition comprising 3% of a platy substrate.
  • the lipsticks were tested on skin and lip.
  • the lipsticks comprising coated substrates were found to have a preferable feeling.
  • Pressed powder compositions were also prepared.
  • the composition was a formulation known to have rough texture.
  • the composition comprises 20.0% platy substrate and was evaluated on skin. A noticeable difference was observed for the pressed powder compositions comprising treated substrates compared to the compositions comprising untreated substrates.
  • the pressed powders comprising coated substrates had a preferable feeling.
  • the treated synthetic mica compositions possessed a very smooth, almost creamy, feeling.
  • the treated synthetic mica compositions also exhibited good skin adhesion.
  • Lipsticks made with either talc or MEARLMICA® Treated SVA have a “dirty” mass tone.
  • lipsticks made with treated synthetic mica did not exhibit the same degree of “dirty” mass tone.
  • a visual color shift was observed in the treated CHIONE lipstick compared to the MEARLMICA® Treated SVA lipstick.
  • the treated synthetic mica was notable for being more transparent in the lipstick formulas.
  • Lipstick compositions comprising “5 micron” pigments, such as REFLECKS can have a gritty feeling on the lips. It was found that in a lipstick composition comprising treated synthetic mica and 5 micron REFLECKS Gilded Gold G232L (a multilayer metal oxide-coated borosilicate substrate pigment manufactured by BASF), the lauroyl lysine treated synthetic mica used at a 1:1 ratio masked the grittiness feeling of the 5 micron Reflecks on the lips. In contrast, MEARLMICA® Treated SVA did not mask as well the gritty feeling in a comparable lipstick formulation on the lips. Thus, the treated synthetic mica advantageously exhibits improved function of masking a gritty feeling from particulate components such as pigments in a cosmetic, as compared to treated natural mica.
  • Compressibility of lauroyl lysine-coated CHIONETM M-fraction synthetic mica was assessed. Compressibility was also assessed for: uncoated synthetic mica M-fraction; uncoated natural mica (Natural V mica); lauroyl lysine-coated natural mica (MEARLMICA® Treated SVA); and SUPAFINO H talc. Compressibility was assessed as follows. A 3 gram sample of platy substrate was placed in a standard large round eyeshadow pan press and placed in an eyeshadow press. The sample was pressed at 2500 psi for 10 seconds. The hardness and tactile properties of the resulting pad of pressed platy substrate was then assessed. The hardness was tested using a Zwick/Durotester (durometer). Hardness values ranges from 0 (for full penetration) to 100 100 (for no penetration), wherein full penetration is between 2.46 and 2.54 mm (0.097 to 0.1 in).
  • the treated synthetic platy substrate had a hardness rating of 63. In contrast, lower hardness ratings were measured for both MEARLMICA® Treated SVA and for talc. These data indicate that the pressed pads of MEARLMICA® Treated SVA and of talc were softer and less compact. Moreover, the pressed pads of treated CHIONETM M fraction synthetic mica were more uniform, compared to the untreated substrates. In addition, it was found that the coated substrates compressed at a lower pressure than the untreated substrates. Thus, the treated synthetic mica advantageously exhibits improved hardness and compressibility compared to MEARLMICA® Treated SVA.
  • FIG. 2 illustrates that lauroyl lysine precipitated onto the synthetic mica in a smooth precipitate form.
  • FIG. 3 illustrates that in a simple physical blend of synthetic mica and lauroyl lysine, lauroyl lysine appears to form rough particles that rest on the surface of the synthetic mica.
  • the treated platy substrate was CHIONETM synthetic mica (about 90 to 96%) with a coating of about 4% to 10% lauroyl lysine.
  • the Natural V mica had a whiteness of about 40.
  • the treated platy substrate had a whiteness of over 70. See FIG. 4 .
  • control sample no pigment
  • untreated CHIONETM synthetic mica untreated CHIONETM synthetic mica
  • CHIONETM synthetic mica treated with lauroyl lysine.
  • the data are depicted in Table 18.
  • the treated platy substrate of the disclosure had a notably lower coefficient of friction compared to the untreated platy substrate.
  • the treated platy substrate is a much smoother material than the corresponding untreated platy substrate. This property is advantageous for cosmetic applications of the treated platy substrate.
  • an element means one element or more than one element.
  • the embodiments of the invention comprise the components and/or steps disclosed herein.
  • the embodiments of the invention consist essentially of the components and/or steps disclosed herein.
  • the embodiments of the invention consist of the components and/or steps disclosed herein.

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US20170189289A1 (en) * 2015-12-30 2017-07-06 Natura Cosméticos S.A. Cosmetic compositions comprising a synergistic combination of sweat absorbing particles and adsorbing particles and use thereof
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WO2024057417A1 (ja) * 2022-09-13 2024-03-21 株式会社日本色材工業研究所 固形粉末化粧料

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